| Truth and the senses. (1, pp. 26-31) |
| Obstacles to agreement. (1, pp. 16-20) |
| Value preferences organized into a value-system. (1, p. ix) |
| Ethical value of human organizations as systems. (E, p. 24) |
| The value of an orientation is the number of questions it gives rise to. (1, pp. xxvi-xxvii) |
| Value orientation. (D, p. 182) |
| Consistency and freedom govern the behavior of science. (1, pp. xii-xiii) |
| Direction of science. (1, p. ix) |
| Scientists tend to believe what they say about themselves. (1, pp. viii-ix) |
| Preciseness of a system and a scientist's judgement. (A, p. 456) |
| Truth value of an assertion. (1, p. 161) |
| True vs. False in mathematics. (1, p. 145) |
| Science and ethics. (2, p. 126) |
| The task of General Systems Theory. (C, p. 457) |